I’m still not sure I actually understand what dirt sound you’re looking for. So I’ve got nothing to suggest at this point.
That makes two of us ;-)
I can only tell you what I think I want at this moment.
Right now, the pedals that I did like a lot, but nonetheless am either parting with or have already sent to their new homes are:
Way Huge Pork Loin:
I loved the softness of the clipping, but compared to others, it sounded too artificial. Not like a smooth tube amp gently pushed into saturation and more like a synth with velvet overdrive enabled.
Heather Brown Electronicals The Blessed Mother:
The dynamic range did not do it for me. It's a great pedal, but we did not click.
AMT O-Bass: The form factor plus the 12V requirement were my main issues with this one.
The pedals I'm holding on to for the time being:
SolidGoldFX Beta DLX.
I love that you can set it so smooth it can do its thing for a variety of styles. When you play older music, the bass can really benefit from a bit of harmonic breakup that does not sound angry or harsh. The boost works very well, too. The pedal sounds like it gets brighter with higher gain settings, so you can have a smooth soft overdrive dialed in and then kick in the boost which not only adds gain, but also a bit of roughness to the clipping, giving you, careful experimenting with all the knobs provided, two very usable sounds.
Crazy Tube Locomotive.
If I had an all solid state signal path, I would probably set this pedal somewhere near the end and use it as an always on tube-magic-injector. It totally can do that. It also can do a really dynamic overdrive that sounds and feels very organic.
One Control Silver Bee:
I have not made up my mind about this one, but it does a crazy good dynamic range and feels like the voice it adds is very flexible. At this point I feel that it does some gentle tone shaping and I would not (yet) call it transparent, but it does its thing in a good way.
You could take those six pedals, put a number on each and then pass me a die and tell me to roll it, the number it shows will be my dirt pedal for the time being - and I could actually live a happy life with that.
It could also be that the Locomotive and the Beta cover all my needs and it's downhill from here.
I think at the moment, I'm continuing on this path because I'm having fun and momentum.